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Finding the Fourth Proportional to 385,816.50, 532,427.04 and 216,054.54

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Solution

The fourth proportional to 385,816.50, 532,427.04 and 216,054.54 is: 298,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,816.50 : 532,427.04 = 216,054.54 : x
  2. Step 2: Convert to fraction form
    385,816.50/532,427.04 = 216,054.54/x
  3. Step 3: Cross multiply
    385,816.50x = 532,427.04 × 216,054.54
  4. Step 4: Simplify right side
    385,816.50x = 115,033,279,210.76
  5. Step 5: Solve for x
    x = 115,033,279,210.76/385,816.50
  6. Step 6: Final answer
    x = 298,155.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.